Java SE (Java Platform, Standard Edition)

hi all:

I have some ComboBoxes and i need refresh the ComboBox content with database data.

When the program starts, the combobox is loaded correctly but I can not do that update dynamically

with this method i start my comboboxes


PaymentsController.java

public void cargaBDCombos()
    {
        ConectBD bd = new ConectBD();
        proyectoCombo.getItems().clear();
        ArrayList<String> listProys = bd.getSsns("SELECT nom_proy from \"Proy\"");
        ObservableList<String> listProy = FXCollections.observableArrayList(listProys);
        combo1.setItems(listProy);
        combo2.setItems(listProy);
        ArrayList<String> listProvs = bd.getSsns("SELECT provs from \"Provs\"");
        ObservableList<String> listProv = FXCollections.observableArrayList(listProvs);
        combo3.setItems(listProv);
        combo4.setItems(listProv);
        bd.cierraPostgress();
    }

then ... I try to add data to another form...

addDialogController

public void add(ActionEvent event)
    {
        try {
            FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("guiPayment.fxml"));
            AnchorPane page = (AnchorPane) fxmlLoader.load();
            PaymentsController payController = (PaymentsController) fxmlLoader.getController();
            ConectBD bd = new ConectBD();
            bd.conectPostgres();
            
            String name = nameTextField.getText();
            if (!nameTextField.getText().isEmpty())
            {
                if (table == "Prov")
                {
                    bd.insertaDato("INSERT INTO \""+table+"\" (prov_name) VALUES ('"+name.toUpperCase()+"')");
                    payController.cargaBDCombos();
                    bd.closePostgress();
                }
                else if (tabla == "Proyectos")
                {
                    bd.insertaDato("INSERT INTO \""+tabla+"\" (nom_proyecto) VALUES ('"+nombre.toUpperCase()+"')");
                    payController.cargaBDCombos();
                    bd.closePostgress();
                }
            }
            popup.hide();
        } catch (IOException ex) {
            Logger.getLogger(DialogoAgregarController.class.getName()).log(Level.SEVERE, null, ex);
        }
        
    }

I also tried some other things but I have not succeeded.